Technical description: blackwood with plated metal probably german silver chromium-plated.Five pieces: mouthpiece, barrel, upper section, lower section, bell.Ebonite mouthpiece with a long table, ligature and reed-cap. Barrel bulbous in its lower half with two german silver ferrules.Upper section: straight speaker, liner projects almost into the middle of the bore. Lower section: thumb rest. Bell almost continuous.
L0: T + ring + vent F₄/C♮₆; speaker.
L1: T + ring F♯₄; throat A♮; throat A♭.
L2: T + E♭₄/ B♭₅ corresponding ring.
L3: T; cross E♭₄/ B♭₅,
L4: C♯₄/G♯₅; F₃/C♮₅; E₃/B♮₄; F♯₃/C♯₅.
R1: T + ring; B♭ via correspondence; trills 1-2-3
R2: T + ring B♮₃/F♯₅; B♭ via correspondence.
R3: T + ring B♮₃/F♯₅; B♭ via correspondence; cross B♮₃/F♯₅.
R4: G♯₃/E♭₅; E₃/B♮₄; F₃/C♮₅; F♯₃/C♯₅.
Keymount type: pillars
Keyhead type: modern
Stamped on upper section "BOOSEY HAWKES LONDON" trademark and "36635" on back and on back of lower section; on bell "BOOSEY HAWKES LONDON" trademark. Barrel unstamped; mouthpiece stamped "3 / Calteau / MADE IN ENGLAND"; ligature stamped "BUFFET CRAMPON / FRANCE".
General usage of type: average non-professional Boehm clarinet.